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12919306 = 223812713
BaseRepresentation
bin110001010010…
…001000001010
3220022100221211
4301102020022
511301404211
61140523334
7214545421
oct61221012
926270854
1012919306
117324514
1243b054a
1328a457a
141a042b8
151202e21
hexc5220a

12919306 has 8 divisors (see below), whose sum is σ = 19394244. Its totient is φ = 6454560.

The previous prime is 12919301. The next prime is 12919339. The reversal of 12919306 is 60391921.

It can be written as a sum of positive squares in 2 ways, for example, as 12895281 + 24025 = 3591^2 + 155^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12919301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3406 + ... + 6118.

Almost surely, 212919306 is an apocalyptic number.

12919306 is a deficient number, since it is larger than the sum of its proper divisors (6474938).

12919306 is a wasteful number, since it uses less digits than its factorization.

12919306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5096.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 12919306 is about 3594.3436118435. The cubic root of 12919306 is about 234.6459494272.

It can be divided in two parts, 12919 and 306, that added together give a square (13225 = 1152).

The spelling of 12919306 in words is "twelve million, nine hundred nineteen thousand, three hundred six".

Divisors: 1 2 2381 2713 4762 5426 6459653 12919306